Which class of vertebrates is considered to be the first to develop lungs, allowing them to become terrestrial organisms? A) Reptilia B) Aves C) Mammalia D) Amphibia - Qammunity

Which class of vertebrates is considered to be the first to develop lungs, allowing them to become terrestrial organisms? A) Reptilia B) Aves C) Mammalia D) Amphibia

asked Dec 24, 2019 21.0k views

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